Mechanism Driver Pcba - Printronix P9012 Maintenance Manual

Mechanism Driver PCBA

The mechanism driver PCBA contains those circuits required to drive the
various motors of the printer mechanism. These driver circuits are under
control of the MCU. The mechanism driver PCBA also produces, by use of
switching regulators, the 12 V and +5 VDC required by the MCU and
DCU. These voltages are generated from the +36 V output of the power
supply. A 63 VDC power supply on the board is used in the paper feed motor
circuit and the shuttle motor circuit. Fault detect circuits monitor error
indications and sends a fault message flag to the MCU.
2–22
(Figure 2–16 and Figure 2–17)
Principles of Operation